EP0378882A1 - Non-disconnectible joint for thin-walled pipes using a press fitting - Google Patents
Non-disconnectible joint for thin-walled pipes using a press fitting Download PDFInfo
- Publication number
- EP0378882A1 EP0378882A1 EP89250122A EP89250122A EP0378882A1 EP 0378882 A1 EP0378882 A1 EP 0378882A1 EP 89250122 A EP89250122 A EP 89250122A EP 89250122 A EP89250122 A EP 89250122A EP 0378882 A1 EP0378882 A1 EP 0378882A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press fitting
- thin
- pipes
- titanium
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/161—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
- F16L13/142—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling
Definitions
- a problem solution for the transport of the aforementioned water is the use of the material titanium or a titanium alloy, which are highly corrosion-resistant and have a low specific weight.
- titanium has so far only been used to a very limited extent, since the previous connection technology of gas-shielded arc welding is a highly specialized and very complex technology. So far, titanium has been used primarily in power plant technology and chemical engineering.
- the object of the invention is to provide a connection technology with which thin-walled tubes made of titanium or a titanium alloy can be connected to one another in a simple, safe and cost-effective manner.
- connection technology is that it enables the use of titanium as a material or a titanium alloy for wide areas of installation technology with special demands on corrosion resistance from an economic point of view. In addition, the use of these materials can be mastered by specialist installation companies using the proposed connection technology.
- connection technology is that, in contrast to welding, the cold pressing means that there is no risk of fire and that the connection must not be checked again, since a tight connection is guaranteed in any case by the automatically operating pressing tool.
- the press fitting 3 each has a bead-shaped end 4, in the cavity of which the round sealing ring 5 made of butyl rubber is arranged.
- the two jaws 6, 7 of the pressing tool encompass the bead-shaped end 4 of the press fitting 3 and the two jaws 6, 7 are closed by hydraulically or electromechanically applied pressure and the press fitting 3 is connected to the pipe 1 in a positive and non-positive manner.
- the reduction in the inner diameter 8 of the tube 1 in the region of the pressing is deliberately sought in order to improve the mechanical clamping. This increases the resistance to the longitudinal forces that try to push the pipe 1 out of the press fitting 3.
- Figure 2 shows a section along the line A-A in Figure 1.
- the two jaws 6, 7 of the pressing tool are fully closed and, due to the shape of the jaws 6, 7, there is approximately a hexagonal cross-sectional configuration of the connection.
- the small cavity 9.9 'in the parting plane of the two jaws 6.7 is required so that excess material can flow off during the pressing.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Clamps And Clips (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Beim Transport von aggressiven Wässern in der Installationstechnik z. B. Meerwasser oder Thermalwasser werden durch die Wasserinhaltsstoffe wie z. B. Chloride hinsichtlich der Korrosionsbeständigkeit hohe Anforderungen an die wasserführenden Leitungen gestellt. Zur Überwindung dieses Problems werden oftmals nichtrostende Stähle eingesetzt, die aber trotz hoher Legierungsgehalte Anwendungsgrenzen haben. Überschreiten die Chloridgehalte der Wässer bestimmte Werte, dann versagen auch hochlegierte nichtrostende Stähle.When transporting aggressive water in installation technology such. B. sea water or thermal water are by the water ingredients such. B. Chloride made high demands on the water-carrying pipes in terms of corrosion resistance. In order to overcome this problem, stainless steels are often used, but they have application limits despite the high alloy content. If the chloride content of the water exceeds certain values, then high-alloyed stainless steels also fail.
Eine Problemlösung für den Transport oben genannter Wässer ist der Einsatz des Werkstoffes Titan bzw. einer Titanlegierung, die im hohen Maße korrosionsbeständig sind und ein niedriges spezifisches Gewicht aufweisen. Zur Lösung der Korrosionsprobleme im Bereich z. B. der Meerwasser- oder Thermalwassertechnik wird Titan bisher nur sehr eingeschränkt eingesetzt, da die bisherige Verbindungstechnik des Schutzgasschweißens eine hochspezialisierte und sehr aufwendige Technik darstellt. Titan wird daher bisher vorzugsweise in der Kraftwerkstechnik und Chemietechnik verwendet.A problem solution for the transport of the aforementioned water is the use of the material titanium or a titanium alloy, which are highly corrosion-resistant and have a low specific weight. To solve the corrosion problems in the z. B. seawater or thermal water technology, titanium has so far only been used to a very limited extent, since the previous connection technology of gas-shielded arc welding is a highly specialized and very complex technology. So far, titanium has been used primarily in power plant technology and chemical engineering.
Aufgabe der Erfindung ist es, eine Verbindungstechnik anzugeben, mit der in einfacher, sicherer und kostengünstiger Weise dünnwandige Rohre aus Titan oder einer Titanlegierung miteinander verbunden werden können.The object of the invention is to provide a connection technology with which thin-walled tubes made of titanium or a titanium alloy can be connected to one another in a simple, safe and cost-effective manner.
Diese Aufgabe wird durch die Verwendung eines Preßfittings gemäß dem Hauptanspruch gelöst.This object is achieved by using a press fitting according to the main claim.
Der Vorteil dieser Verbindungstechnik liegt darin, daß damit die Anwendung des Werkstoffes Titan bzw. einer Titanlegierung für weite Bereiche der Installationstechnik mit besonderer Anforderung an die Korrosionsbeständigkeit unter wirtschaftlichen Gesichtspunkten möglich wird. Außerdem wird die Verwendung dieser Werkstoffe mittels der vorgeschlagenen Verbindungstechnik von Fachinstallationsbetrieben beherrschbar. Ein weiterer Vorteil dieser Verbindungstechnik liegt darin, daß durch die kalte Verpressung im Gegensatz zum Schweißen keine Brandgefährdung auftritt und eine Nachkontrolle der Verbindung entfallen kann, da durch das automatisch arbeitende Preßwerkzeug in jedem Fall eine dichte Verbindung gewährleistet ist.The advantage of this connection technology is that it enables the use of titanium as a material or a titanium alloy for wide areas of installation technology with special demands on corrosion resistance from an economic point of view. In addition, the use of these materials can be mastered by specialist installation companies using the proposed connection technology. Another advantage of this connection technology is that, in contrast to welding, the cold pressing means that there is no risk of fire and that the connection must not be checked again, since a tight connection is guaranteed in any case by the automatically operating pressing tool.
Damit auch höhere in Axialrichtung wirkende Kräfte sicher aufgenommen werden können, wird weiterbildend vorgeschlagen, zusätzlich zu der in den einen Dichtring enthaltenden Fittingsbereich auch an anderen Stellen eine Verpressung vorzunehmen, um damit die mechanische Verklammerung zu verbessern.In order that even higher forces acting in the axial direction can be safely absorbed, it is further developed to carry out pressing in addition to the fitting area containing a sealing ring at other points in order to improve the mechanical clamping.
In der Zeichnung wird das Prinzip der Verwendung des Preßfittings näher erläutert.The principle of using the press fitting is explained in more detail in the drawing.
Es zeigen:
Figur 1 einen Teillängsschnitt durch eine Preßfittingverbindung mit noch angesetztem PreßwerkzeugFigur 2 einen Schnitt entlang der Linie A-A inFigur 1
- 1 shows a partial longitudinal section through a press fitting connection with a press tool still attached
- FIG. 2 shows a section along the line AA in FIG. 1
In Figur 1 ist ein Teillängsschnitt durch eine Preßfittingverbindung mit noch angesetztem Preßwerkzeug dargestellt. Das aus Titan oder einer Titanlegierung hergestellte Rohr 1 wird mit seinem Ende bis zum Anschlag 2 des Preßfittings 3 hineingeschoben. Der Preßfitting 3 weist je ein sickenförmiges Ende 4 auf, in dessen Hohlraum der Runddichtring 5 aus Butylkautschuk angeordnet ist. Die beiden Backen 6,7 des hier nicht dargestellten Preßwerkzeuges umfassen das sickenförmige Ende 4 des Preßfittings 3 und durch hydraulisch oder elektromechanisch aufgebrachten Druck werden die beiden Backen 6,7 geschlossen und der Preßfitting 3 mit dem Rohr 1 form- und kraftschlüssig miteinander verbunden. Die Verringerung des Innendurchmessers 8 des Rohres 1 im Bereich der Verpressung wird bewußt angestrebt, um die mechanische Verklammerung zu verbessern. Dadurch steigt der Widerstand gegen die auftretenden Längskräfte, die versuchen, das Rohr 1 aus dem Preßfitting 3 herauszudrücken.1 shows a partial longitudinal section through a press fitting connection with a press tool still attached. The end of the
Bei der Verpressung wird der Durchmesser des sickenförmigen Endes 4 des Preßfittings 3 verringert und der Hohlraum in der Sicke verkleinert, so daß der eingeschlossene Runddichtring 5 elastisch verformt und damit die Dichtwirkung erzielt wird.During pressing, the diameter of the bead-
Figur 2 zeigt einen Schnitt entlang der Linie A-A in Figur 1. In diesem Querschnitt ist die form- und kraftschlüssige Verklammerung des Preßfittings 3 mit dem Rohr 1 gut zu erkennen. Die beiden Backen 6,7 des nicht dargestellten Preßwerkzeuges sind voll zugefahren und bedingt durch die Form der Backen 6,7 entsteht in etwa eine sechseckige Querschnittskonfiguration der Verbindung. Der kleine Hohlraum 9,9′ in der Teilungsebene der beiden Backen 6,7 ist erforderlich, damit überschüssiges Material bei der Verpressung abfließen kann.Figure 2 shows a section along the line A-A in Figure 1. In this cross section, the positive and non-positive clamping of the press fitting 3 with the
Claims (2)
dadurch gekennzeichnet,
daß insbesondere zum Transport aggressiver Wässer in der Installationstechnik die nahtlosen oder geschweißten Rohre und der Preßfitting aus Titan oder einer Titanlegierung bestehen, wobei die Rohre einen Außendurchmesser im Bereich von 10 bis 100 mm und eine Wanddicke im Bereich von 0,5 bis 3,0 mm aufweisen und mindestens der den Dichtring enthaltende Bereich des Preßfittings mit dem Rohr verpreßt wird.1. Inseparable connection of thin-walled pipes using a press fitting with bead-shaped ends receiving a sealing ring, the pipes being connected to the press fitting in a positive and non-positive manner in the cold state by means of a press tool,
characterized,
that in particular for the transport of aggressive water in installation technology, the seamless or welded pipes and the press fitting are made of titanium or a titanium alloy, the pipes having an outside diameter in the range from 10 to 100 mm and a wall thickness in the range from 0.5 to 3.0 mm have and at least the area of the press fitting containing the sealing ring is pressed with the pipe.
dadurch gekennzeichnet,
daß zusätzlich auch andere Bereiche des Preßfittings mit dem Rohr verpreßt werden.2. Connection according to claim 1,
characterized,
that in addition, other areas of the press fitting are pressed with the pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89250122T ATE79454T1 (en) | 1989-01-17 | 1989-12-20 | NON-DETACHABLE CONNECTION OF THIN-WALLED PIPES USING A PRESS FITTING. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3901562 | 1989-01-17 | ||
DE3901562A DE3901562C1 (en) | 1989-01-17 | 1989-01-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0378882A1 true EP0378882A1 (en) | 1990-07-25 |
EP0378882B1 EP0378882B1 (en) | 1992-08-12 |
Family
ID=6372436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89250122A Expired - Lifetime EP0378882B1 (en) | 1989-01-17 | 1989-12-20 | Non-disconnectible joint for thin-walled pipes using a press fitting |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0378882B1 (en) |
AT (1) | ATE79454T1 (en) |
CA (1) | CA2007754A1 (en) |
DE (2) | DE3901562C1 (en) |
ES (1) | ES2034603T3 (en) |
GR (1) | GR3005426T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0470680A2 (en) * | 1990-08-07 | 1992-02-12 | MANNESMANN Aktiengesellschaft | Usage of a press-fitting for the fabrication of a non-disconnectable thin-walled pipe joint |
WO1998004862A1 (en) * | 1996-07-26 | 1998-02-05 | Mannesmann Ag | Pipe joint |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29510265U1 (en) * | 1995-06-24 | 1996-11-21 | Seppelfricke Armaturen GmbH & Co., 45881 Gelsenkirchen | Pipe connection |
DE19637688C2 (en) * | 1996-09-09 | 1998-08-20 | Mannesmann Ag | Pipe connection |
EP0893639A1 (en) * | 1997-07-23 | 1999-01-27 | Chibro S.p.A. | Means for the formation of hydraulic circuits and relating process |
DE102004044636B3 (en) * | 2004-09-10 | 2006-04-06 | Visteon Global Technologies, Inc., Dearborn | Connection assembly and method for making connections to high pressure pipes in vehicle air conditioners |
CN104033672A (en) * | 2013-03-08 | 2014-09-10 | 浙江艾迪西流体控制股份有限公司 | Polyethylene-aluminum composite pipeline connector |
CN105805445A (en) * | 2016-04-11 | 2016-07-27 | 成都格瑞思文化传播有限公司 | Water pipe connector |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2046962A1 (en) * | 1969-09-24 | 1971-04-22 | Dresser Ind | Die-forged pipe coupling |
US3730567A (en) * | 1970-07-08 | 1973-05-01 | Axial Corp | Coupling sleeve |
DE2725280A1 (en) * | 1977-06-01 | 1978-12-14 | Mannesmann Roehren Werke Ag | Pipe connection system for thin metal pipes - uses compressible sleeve with conical section and ring collars |
GB2134614A (en) * | 1983-01-31 | 1984-08-15 | Mannesmann Ag | Pipe connection |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3512331C1 (en) * | 1985-04-03 | 1986-08-21 | Mannesmann AG, 4000 Düsseldorf | Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection |
-
1989
- 1989-01-17 DE DE3901562A patent/DE3901562C1/de not_active Expired - Fee Related
- 1989-12-20 ES ES198989250122T patent/ES2034603T3/en not_active Expired - Lifetime
- 1989-12-20 EP EP89250122A patent/EP0378882B1/en not_active Expired - Lifetime
- 1989-12-20 DE DE8989250122T patent/DE58902045D1/en not_active Expired - Fee Related
- 1989-12-20 AT AT89250122T patent/ATE79454T1/en not_active IP Right Cessation
-
1990
- 1990-01-15 CA CA002007754A patent/CA2007754A1/en not_active Abandoned
-
1992
- 1992-08-13 GR GR920401701T patent/GR3005426T3/el unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2046962A1 (en) * | 1969-09-24 | 1971-04-22 | Dresser Ind | Die-forged pipe coupling |
US3730567A (en) * | 1970-07-08 | 1973-05-01 | Axial Corp | Coupling sleeve |
DE2725280A1 (en) * | 1977-06-01 | 1978-12-14 | Mannesmann Roehren Werke Ag | Pipe connection system for thin metal pipes - uses compressible sleeve with conical section and ring collars |
GB2134614A (en) * | 1983-01-31 | 1984-08-15 | Mannesmann Ag | Pipe connection |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0470680A2 (en) * | 1990-08-07 | 1992-02-12 | MANNESMANN Aktiengesellschaft | Usage of a press-fitting for the fabrication of a non-disconnectable thin-walled pipe joint |
EP0470680A3 (en) * | 1990-08-07 | 1992-07-08 | Mannesmann Aktiengesellschaft | Usage of a press-fitting for the fabrication of a non-disconnectable thin-walled pipe joint |
WO1998004862A1 (en) * | 1996-07-26 | 1998-02-05 | Mannesmann Ag | Pipe joint |
CN1078330C (en) * | 1996-07-26 | 2002-01-23 | 曼内斯曼股份公司 | Pipe joint |
Also Published As
Publication number | Publication date |
---|---|
CA2007754A1 (en) | 1990-07-17 |
ES2034603T3 (en) | 1993-04-01 |
DE58902045D1 (en) | 1992-09-17 |
EP0378882B1 (en) | 1992-08-12 |
ATE79454T1 (en) | 1992-08-15 |
GR3005426T3 (en) | 1993-05-24 |
DE3901562C1 (en) | 1990-03-08 |
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